Well, you know - those '72 Malibus are just really known for that, especially when you get up to the mileage yours has on it, and when you leave the original plugs in for 40 years and all of that. [sarcasm]
How about you report full info on the car (including the state of basic maintenance). Then measure the actual MPGs you are getting and post that. To measure you have to use the odometer and actual fuel to fill the car at fill ups. After all of that, there might be something to talk about.